diff --git a/grobid-core/src/main/java/org/grobid/core/utilities/matching/ReferenceMarkerMatcher.java b/grobid-core/src/main/java/org/grobid/core/utilities/matching/ReferenceMarkerMatcher.java
index 2c0f17467f..87a8a79374 100644
--- a/grobid-core/src/main/java/org/grobid/core/utilities/matching/ReferenceMarkerMatcher.java
+++ b/grobid-core/src/main/java/org/grobid/core/utilities/matching/ReferenceMarkerMatcher.java
@@ -7,7 +7,7 @@
 import org.apache.lucene.analysis.standard.ClassicAnalyzer;
 import org.apache.lucene.util.Version;
 import org.grobid.core.data.BibDataSet;
-import org.grobid.core.data.BiblioItem;;
+import org.grobid.core.data.BiblioItem;
 import org.grobid.core.layout.LayoutToken;
 import org.grobid.core.utilities.LayoutTokensUtil;
 import org.grobid.core.utilities.Pair;
@@ -478,4 +478,4 @@ public boolean isKnownFirstAuthor(String text) {
             return false;
     }
 
-}
\ No newline at end of file
+}